A novel L-asparaginase from the symbiotic Enterobacter aerogenes isolated from Eucheuma sp.
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Date
2022-01-01
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Wiley Periodicals Inc.
Abstract
This study was aimed to purify and characterize the enzyme L-asparaginase from
endophytic microorganisms of Eucheuma sp. in Puntondo Island, South Sulawesi,
Indonesia. Research stages were ammonium sulfate precipitation, dialysis, and
Sephadex G-75 gel filtration chromatography and Sephadex CMC-50 ion-exchange chromatography matrices. The result of test activities of ammonium sulfate fraction showed the highest range of 40%–60% the activity value of 6.71 IU/ml. The highest protein content was obtained on a 0%–20% fraction of 2.76 mg/ml. Temperature and pH assessments indicated that L-asparaginase had optimum activity at 37°C and pH 8, respectively. At the stage of dialysis, the highest protein content was 5.17 IU/ml in a 0%–20% fraction, and the highest enzyme activity was 1.23 IU/ml in a 20%–40% frac tion. The results of gel filtration chromatography fractions G-75 were F5–F10, with a specific activity of 0.60 U/mg, 2.05 times higher purity level than the crude extract enzyme. The results of CMC-50 ion-exchange chromatography showed that F54 and F55 fractions had a specific activity of 106.97 and 295.38 U/mg, respectively, with a
purity level of 366.34 and 1,011.57 times higher than the crude extract enzyme.
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Citation
Masri, M., Nur, F., Widodo, J., Jusuf, E., Sahar, W., Wahida, N., ... & Fadly, N. (2022). A novel L‐asparaginase from the symbiotic Enterobacter aerogenes isolated from Eucheuma sp. Journal of Food Processing and Preservation, 46(3), e16306.